Flashlamp pumped power amplifier producing up to 100 mJ per pulse at 1064 nm

30 ps pulse duration (20 ps optional)

Excellent pulse duration stability

Up to 50 Hz repetition rate

Streak camera triggering pulse with <10 ps rms jitter

Excellent beam pointing stability

Thermo stabilized second, third or fourth harmonic generator options

PC control via USB and LabVIEW™ drivers (RS232 control is optional)

Remote control via keypad

Applications

Time resolved spectroscopy

SFG/SHG spectroscopy

Nonlinear spectroscopy

OPG pumping

Remote laser sensing

Satellite ranging

Other spectroscopic and nonlinear optics experiments

PL2250 series lasers set a new standard in high pulse energy picosecond lasers. Their innovative and cost-effective design improves laser reliability and reduces running and maintenance costs.

Innovative design

The heart of the system is a diode pumped solid state (DPSS) master oscillator placed in a hermetically sealed monolithic block. The flashlamp pumped regenerative amplifier is replaced by an innovative diode pumped regenerative amplifier. Diode pumping results in negligible thermal lensing, which allows operation of the regenerative amplifier at variable repetition rates, as well as improved long-term stability and maintenance-free operation.

The optimized multiple-pass power amplifier is flashlamp pumped and is optimized for efficient amplification of pulse while maintaining a near Gaussian beam profile and low wavefront distortion. The output pulse energy can be adjusted in approximately 1% steps, at the same time as pulse-to-pulse energy stability remains less than 0.8% rms at 1064 nm. Angle-tuned KD*P and KDP crystals mounted in thermostabilised ovens are used for second, third and fourth harmonic generation. Harmonics separators ensure the high spectral purity of each harmonic directed to different output ports.

Built-in energy monitors continuously monitor output pulse energy. Data from the energy monitor can be seen on the remote keypad or PC monitor. The laser provides several triggering pulses for synchronization of the customer‘s equipment. The lead or delay of the triggering pulse can be adjusted in 0.25 ns steps from the control pad or PC. Up to 1000 μs lead of triggering pulse is available as a pretrigger option.

For customer convenience the laser can be controlled from a user-friendly remote control pad or USB interface. The remote pad allows easy control of all parameters and features a backlit display that is easy to read even while wearing laser safety eyewear. Alternatively, the laser can be controlled from a personal computer with supplied software for a Windows™ operating system. LabVIEW™ drivers are supplied as well.

Specifications 1)

Model

PL2250

PL2251

PL2251A

PL2251B

PL2251C

Pulse energy

At 1064 nm

1 mJ

30 mJ

50 mJ 8)

80 mJ 8)

100 mJ

At 532 nm 2)

0.45 mJ

15 mJ

25 mJ

40 mJ

50 mJ

At 355 nm 3)

0.3 mJ

10 mJ

15 mJ

24 mJ

30 mJ

At 266 nm 4)

0.15 mJ

3 mJ

7 mJ

10 mJ

12 mJ

Pulse energy stability, (Std. Dev.) 5)

At 1064 nm

< 0.2 %

< 0.8 %

At 532 nm

< 0.4 %

<1.0 %

At 355 nm

< 0.5 %

< 1.1 %

At 266 nm

< 0.5 %

< 1.2 %

Pulse duration (FWHM) 6)

30 ± 3 ps

Pulse duration stability 7)

± 1.0 ps

Repetition rate

0-50 Hz

50 or 10 Hz

50, 20 or 10 Hz

20 or 10 Hz

10 Hz

Polarization

linear, vertical, > 100:1

Pre-pulse contrast

> 200:1

Triggering mode

internal/external

SYNC OUT pulse jitter 9)

< 0.1 ns

SYNC OUT pulse delay 10)

- 500...50 ns

Beam divergence 11)

< 1.5 mrad

< 0.6 mrad

< 0.5 mrad

< 0.5 mrad

< 0.5 mrad

Beam pointing stability 12)

< 10 µrad

< 50 µrad

< 50 µrad

< 50 µrad

< 50 µrad

Typical beam diameter 13)

~2.5 mm

~ 6 mm

~ 8 mm

~10 mm

~12 mm

Typical warm-up time

5 min

30 min

30 min

30 min

30 min

Physical characteristics

Model

PL2250

PL2251

PL2251A

PL2251B

PL2251C

Laser head size (W x L x H), mm

453x1024x260

453x1224x250

Electric cabinet size (W x L x H), mm

12 VDC power adapter, 85x170x41

550x600x550

Umbilical length

2.5 m

Operating requirements

Model

PL2250

PL2251

PL2251A

PL2251B

PL2251C

Water consumption (max 20 °C )

Air cooled

< 8 l/min

Room temperature

22 ± 2 °C

Relative humidity (non-condensing)

20-80 %

Power requirements 14)

110-240 VAC, 50/60 Hz

Single phase, 208 or 230 VAC, 16A, 50/60 Hz

Power 15)

< 0.15 kVA

< 1.5 kVA

< 1.5 kVA

< 2 kVA

< 2.5 kVA

1) Due to continuous improvement, all specifications are subject to change without notice. Parameters marked typical are not specifications. They are indications of typical performance and will vary with each unit we manufacture. Unless stated otherwise, all specifications are measured at 1064 nm.

2) PL2251A-50 has 40 mJ at 1064 nm, PL2251B-20 has 70 mJ at 1064 nm output energy. Inquire for these energies at other wavelengths.

3) For -SH option. Outputs are not simultaneous. Please inquire for pulse energies at other wavelengths.

4) For -TH option. Outputs are not simultaneous. Please inquire for pulse energies at other wavelengths.

5) For -FH option. Outputs are not simultaneous. Please inquire for pulse energies at other wavelengths.

6) Averaged from 300 pulses.

7) Inquire for optional pulse durations in 20 – 150 ps range.

8) Measured over 1 hour period when ambient temperature variation is less than ±1 °C.

9) 10 ps jitter is provided with PRETRIG option.

10) SYNC OUT lead or delay can be adjusted with 0.25 ns steps in specified range.